.\" Copyright (c) 1980, 1990 The Regents of the University of California.
.\" %sccs.include.redist.man%
.\" @(#)biff.1 6.3 (Berkeley) %G%
.Nd be notified if mail arrives and who it is from
informs the system whether you want to be notified when mail arrives
during the current terminal session.
enables notification; the command
When mail notification is enabled, the header and first few lines of
the message will be printed on your screen whenever mail arrives.
command is often included in the file
to be executed at each login.
For synchronous notification use the
appeared in the 4.0 BSD release.